Macro assert_debug_snap 

macro_rules! assert_debug_snap {
    ($actual:expr, $expected:expr) => { ... };
    ($actual:expr, $expected:expr,$($tail:tt)+) => { ... };
}

Asserts any types implementing Debug.

The macro formats actual and expected using {:#?} pretty-printing prior to comparison.

Syntax

assert_debug_snap!(actual, expected);
assert_debug_snap!(actual, expected, "pattern" => "replacement");
assert_debug_snap!(actual, expected, [limit] "pattern" => "replacement");
assert_debug_snap!(actual, expected, rule1, rule2, ...);

Examples

Basic debug assertion:

use assert_snap::assert_debug_snap;

assert_debug_snap!(Some(42), Some(42));

Debug assertion with redaction rules:

use assert_snap::assert_debug_snap;

#[derive(Debug)]
struct User {
    name: String,
    token: String,
}

let user = User { name: "Alice".into(), token: "secret_123".into() };
assert_debug_snap!(
    user,
    User {
        name: "Alice".to_string(),
        token: "****".to_string(),
    },
    "secret_123" => "****"
);